How is carbonic acid formed in nature and what are its implications for the environment?

Carbonic acid is formed in nature when carbon dioxide dissolves in water, creating a weak acid. This process occurs naturally in the atmosphere and in bodies of water. The presence of carbonic acid in the environment can lead to ocean acidification, which can harm marine life and disrupt ecosystems. Additionally, carbonic acid can contribute to the overall acidity of rainwater, leading to negative impacts on soil and vegetation.